2Y7Q - JenaLib

Asym./Biol. Unit (Jmol Viewer)

Asym./Biol. Unit - sites (Jmol Viewer)

Title :   THE HIGH-AFFINITY COMPLEX BETWEEN IGE AND ITS RECEPTOR FC EPSILON RI

Authors :   A. M. Davies, M. D. Holdom, J. E. Nettleship, A. J. Beavil, R. J. Owens, B.

Date :   01 Feb 11 (Deposition) - 20 Apr 11 (Release) - 18 May 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   3.40

Chains :   Asym./Biol. Unit : A,B,D

Keywords :   Allergy, Antibody, Ige-Binding Protein, High-Affinity Receptor, Immunoglobulin C Region, Immune System (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. D. Holdom, A. M. Davies, J. E. Nettleship, S. C. Bagby, B. Dhaliwal, E. Girardi, J. Hunt, H. J. Gould, A. J. Beavil, J. M. Mcdonnell, R. J. Owens, B. J. Sutton
Conformational Changes In Ige Contribute To Its Uniquely Slow Dissociation Rate From Receptor Fceri
Nat. Struct. Mol. Biol. V. 18 571 2011
PubMed-ID: 21516097 | Reference-DOI: 10.1038/NSMB.2044
(for further references see the PDB file header)

Molecule 1 - HIGH AFFINITY IMMUNOGLOBULIN EPSILON RECEPTOR SUBUNIT ALPHA
	Chains	:	A
	Engineered	:	YES
	Expression System	:	HOMO SAPIENS
	Expression System Cell Line	:	HEK293S
	Expression System Taxid	:	9606
	Expression System Vector	:	PHLSEC
	Expression System Vector Type	:	PLASMID
	Fragment	:	SOLUBLE EXTRACELLULAR DOMAINS, RESIDUES 26-201
	Mutation	:	YES
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	HIGH AFFINITY IGE RECEPTOR FC EPSILON RI, IGE FC RECEPTOR SUBUNIT ALPHA, FC-EPSILON RI-ALPHA, FCERI

Molecule 2 - IG EPSILON CHAIN C REGION
	Chains	:	B, D
	Engineered	:	YES
	Expression System	:	MUS MUSCULUS
	Expression System Cell Line	:	MOUSE MYELOMA NS0
	Expression System Common	:	HOUSE MOUSE
	Expression System Taxid	:	10090
	Expression System Vector	:	PEE6
	Expression System Vector Type	:	PLASMID
	Fragment	:	FC FRAGMENT COMPRISING DOMAINS CEPSILON2-4, RESIDUES 104-427
	Mutation	:	YES
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606

		1	2	3
Asymmetric/Biological Unit	:	A	B	D

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (3, 7)

No.	Name	Count	Type	Full Name
1	BMA	1	Ligand/Ion	BETA-D-MANNOSE
2	MAN	1	Ligand/Ion	ALPHA-D-MANNOSE
3	NAG	5	Ligand/Ion	N-ACETYL-D-GLUCOSAMINE

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASN A:21 , GLY B:318 , HIS B:319 , THR B:320	BINDING SITE FOR RESIDUE NAG A1174
2	AC2	SOFTWARE	ASP B:362 , GLN B:392 , ASN B:394 , THR B:396	BINDING SITE FOR RESIDUE NAG B1543
3	AC3	SOFTWARE	ASP D:271 , ASP D:362 , GLN D:392 , ASN D:394 , THR D:396	BINDING SITE FOR RESIDUE NAG D1543
4	AC4	SOFTWARE	HIS A:41 , ASN A:42 , PHE A:60 , GLU A:61 , SER A:63 , HIS B:384 , THR B:386 , ARG B:387 , LYS B:388 , GLU B:389	BINDING SITE FOR CHAIN A OF SUGAR BOUND TO ASN A 42 RESIDUES 1175 TO 1178

Asymmetric/Biological Unit

No.	Residues
1	A:26	-	A:68
2	A:107	-	A:151
3	B:241	-	D:328
4	B:254	-	B:312
5	B:328	-	D:241
6	B:358	-	B:418
7	B:464	-	B:524
8	D:254	-	D:312
9	D:358	-	D:418
10	D:464	-	D:524

Asymmetric/Biological Unit

No.	Residues
1	Asn A:10	-	Pro A:11
2	Ser B:532	-	Pro B:533

Asymmetric/Biological Unit (3, 4)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_020091	K	84	R	FCERA_HUMAN	Polymorphism	2298804	A	K	59	R
2	UniProt	VAR_020092	S	101	N	FCERA_HUMAN	Polymorphism	2298805	A	S	76	N
3	UniProt	VAR_003885	W	359	L	IGHE_HUMAN	Polymorphism	---	B/D	W	478	L

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric/Biological Unit (1, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	IG_MHC	PS00290	Immunoglobulins and major histocompatibility complex proteins signature.	IGHE_HUMAN	83-89 297-303 403-409	4	- B:416-422 D:416-422 B:522-528 D:522-528

Asymmetric/Biological Unit (6, 9)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENST00000368115	1	ENSE00001277214	chr1:159259504-159259543	40	FCERA_HUMAN	-	0	0	-	-
1.2a	ENST00000368115	2a	ENSE00001277230	chr1:159272096-159272209	114	FCERA_HUMAN	1-19	19	0	-	-
1.3	ENST00000368115	3	ENSE00001067917	chr1:159272644-159272664	21	FCERA_HUMAN	19-26	8	0	-	-
1.4a	ENST00000368115	4a	ENSE00001067919	chr1:159273718-159273972	255	FCERA_HUMAN	26-111	86	1	A:4-86 (gaps)	83
1.5	ENST00000368115	5	ENSE00001277186	chr1:159275778-159276035	258	FCERA_HUMAN	111-197	87	1	A:86-172	87
1.6b	ENST00000368115	6b	ENSE00001446352	chr1:159277538-159278014	477	FCERA_HUMAN	197-257	61	1	A:172-173	2

2.1	ENST00000390541	1	ENSE00001935719	chr14:106068065-106067756	310	IGHE_HUMAN	1-104	104	0	-	-
2.2	ENST00000390541	2	ENSE00001508179	chr14:106067548-106067228	321	IGHE_HUMAN	104-211	108	2	B:229-330 (gaps) D:228-329 (gaps)	103 103
2.3	ENST00000390541	3	ENSE00001508174	chr14:106067141-106066818	324	IGHE_HUMAN	211-319	109	2	B:330-438 D:332-438	109 107
2.4	ENST00000390541	4	ENSE00001943927	chr14:106066734-106066278	457	IGHE_HUMAN	319-428	110	2	B:438-542 (gaps) D:438-542 (gaps)	105 105

Asymmetric/Biological Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:158
 aligned with FCERA_HUMAN | P12319 from UniProtKB/Swiss-Prot  Length:257

    Alignment length:170
                                    38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198
         FCERA_HUMAN     29 KPKVSLNPPWNRIFKGENVTLTCNGNNFFEVSSTKWFHNGSLSEETNSSLNIVNAKFEDSGEYKCQHQQVNESEPVYLEVFSDWLLLQASAEVVMEGQPLFLRCHGWRNWDVYKVIYYKDGEALKYWYENHNISITNATVEDSGTYYCTGKVWQLDYESEPLNITVIKAP  198
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) -----------------------------------------------------------------------------------Ig_2-2y7qA01 A:87-169                                                              ---- Pfam domains (1)
           Pfam domains (2) -----------------------------------------------------------------------------------Ig_2-2y7qA02 A:87-169                                                              ---- Pfam domains (2)
         Sec.struct. author ....eee....eee....eeee.---------..eeee..eee.....eeee...hhhhheeeeee.---..eeeeeeeee...eeeee...ee.....eeeeeee.....eeeeeeee..eeeeee....eeee...hhhhheeeeeeeee..eeee...eeeee.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------R----------------N------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.4a  PDB: A:4-86 (gaps) UniProt: 26-111 [INCOMPLETE]                         -------------------------------------------------------------------------------------1. Transcript 1 (1)
           Transcript 1 (2) ----------------------------------------------------------------------------------Exon 1.5  PDB: A:86-172 UniProt: 111-197                                               - Transcript 1 (2)
                2y7q A    4 KPKVSLNPPWNRIFKGENVTLTC---------STKWFHNGSLSEETNSSLNIVNAKFEDSGEYKCQH---AESEPVYLEVFSDWLLLQASAEVVMEGQPLFLRCHGWRNWDVYKVIYYKDGEALKYWYENHAISITNAAAEDSGTYYCTGKVWQLDYESEPLNITVIKAP  173
                                    13        23  |      -  |     43        53        63      |  -|       83        93       103       113       123       133       143       153       163       173
                                                 26        36                                70  74

Chain B from PDB  Type:PROTEIN  Length:287
 aligned with IGHE_HUMAN | P01854 from UniProtKB/Swiss-Prot  Length:428

    Alignment length:315
                                   118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418     
          IGHE_HUMAN    109 FTPPTVKILQSSCDGGGHFPPTIQLLCLVSGYTPGTINITWLEDGQVMDVDLSTASTTQEGELASTQSELTLSQKHWLSDRTYTCQVTYQGHTFEDSTKKCADSNPRGVSAYLSRPSPFDLFIRKSPTITCLVVDLAPSKGTVNLTWSRASGKPVNHSTRKEEKQRNGTLTVTSTLPVGTRDWIEGETYQCRVTHPHLPRALMRSTTKTSGPRAAPEVYAFATPEWPGSRDKRTLACLIQNFMPEDISVQWLHNEVQLPDARHSTTQPRKTKGSGFFVFSRLEVTRAEWEQKDEFICRAVHEAASPSQTVQRAVS  423
               SCOP domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeeee..........eeeeeeeeeee....eeeeeee..eeeeeeee.--------.eeeeeeeeeehhhhh....eeeeeee...eeeeee......hhhhheeee...hhhhhh.....eeeeeeeee.......eeeeee...........eeee.....eeeeeeee.hhhhhhh...eeeeee.......eee...............eee....---...eeeeeeee......eeeeee-----.....eee........--.eeeeeeee----------.eeeeee........eeee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------L---------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC ---------------------------------------------------------------------------------------------------IG_MHC -------------- PROSITE
           Transcript 2 (1) Exon 2.2  PDB: B:229-330 (gaps) UniProt: 104-211 [INCOMPLETE]                                          -----------------------------------------------------------------------------------------------------------Exon 2.4  PDB: B:438-542 (gaps) UniProt: 319-428 [INCOMPLETE]                                             Transcript 2 (1)
           Transcript 2 (2) ------------------------------------------------------------------------------------------------------Exon 2.3  PDB: B:330-438 UniProt: 211-319                                                                    -------------------------------------------------------------------------------------------------------- Transcript 2 (2)
                2y7q B  229 FTPPTVKILQSSCDGGGHFPPTIQLLCLVSGYTPGTIQITWLEDGQVMDVDLST--------LASTQSELTLSQKHWLSDRTYTCQVTYQGHTFEDSTKKCADSNPRGVSAYLSRPSPFDLFIRKSPTITCLVVDLAPSKGTVQLTWSRASGKPVNHSTRKEEKQRNGTLTVTSTLPVGTRDWIEGETYQCRVTHPHLPRALMRSTTKTSGPRAAPEVYAFATPEW---RDKRTLACLIQNFMPEDISVQWL-----LPDARHSTTQPRKTKG--FFVFSRLEV----------FICRAVHEAASPSQTVQRAVS  542
                                   238       248     | 257       267       277   |     -  |    297       307       317       327       337       347       357       367       377       387       397       407       417       427       437       447     | 457       467       477 |     487       497  |  | 507   |     -    |  527       537     
                                                  253A                         281      290                                                                                                                                                                453 457                   479   485            500  |     511        522                    
                                                                                                                                                                                                                                                                                                             503

Chain D from PDB  Type:PROTEIN  Length:290
 aligned with IGHE_HUMAN | P01854 from UniProtKB/Swiss-Prot  Length:428

    Alignment length:316
                                   117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347       357       367       377       387       397       407       417      
          IGHE_HUMAN    108 DFTPPTVKILQSSCDGGGHFPPTIQLLCLVSGYTPGTINITWLEDGQVMDVDLSTASTTQEGELASTQSELTLSQKHWLSDRTYTCQVTYQGHTFEDSTKKCADSNPRGVSAYLSRPSPFDLFIRKSPTITCLVVDLAPSKGTVNLTWSRASGKPVNHSTRKEEKQRNGTLTVTSTLPVGTRDWIEGETYQCRVTHPHLPRALMRSTTKTSGPRAAPEVYAFATPEWPGSRDKRTLACLIQNFMPEDISVQWLHNEVQLPDARHSTTQPRKTKGSGFFVFSRLEVTRAEWEQKDEFICRAVHEAASPSQTVQRAVS  423
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) -------------------------------------------------------        --------------------------   -----------  ----------------------------------------------------------------------------------------------------------------------C1     -set-2y7qD01 D:450-536                                                          ------ Pfam domains (1)
           Pfam domains (2) -------------------------------------------------------        --------------------------   -----------  ----------------------------------------------------------------------------------------------------------------------C1     -set-2y7qD02 D:450-536                                                          ------ Pfam domains (2)
           Pfam domains (3) -------------------------------------------------------        --------------------------   -----------  ----------------------------------------------------------------------------------------------------------------------C1     -set-2y7qD03 D:450-536                                                          ------ Pfam domains (3)
           Pfam domains (4) -------------------------------------------------------        --------------------------   -----------  ----------------------------------------------------------------------------------------------------------------------C1     -set-2y7qD04 D:450-536                                                          ------ Pfam domains (4)
           Pfam domains (5) -------------------------------------------------------        --------------------------   -----------  ----------------------------------------------------------------------------------------------------------------------C1     -set-2y7qD05 D:450-536                                                          ------ Pfam domains (5)
           Pfam domains (6) -------------------------------------------------------        --------------------------   -----------  ----------------------------------------------------------------------------------------------------------------------C1     -set-2y7qD06 D:450-536                                                          ------ Pfam domains (6)
         Sec.struct. author .....eeeeeee..........eeeeeeeeeee....eeeeeee..eeeeeeee.--------.eeeeeeeeeehhhhhh...eeeeee---..eeeee....--.....eeee...hhhhhh.....eeeeeeeee.......eeeeee....................eeeeeeee.hhhhhhh..eeeeeee.......eeeeee............eee..-----.....eeeeeeee....eeeeee.---......eee......---.eeeeeee..........--.eeeeee........eeee.. Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------L---------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC ---------------------------------------------------------------------------------------------------IG_MHC -------------- PROSITE
           Transcript 2 (1) Exon 2.2  PDB: D:228-329 (gaps) UniProt: 104-211 [INCOMPLETE]                                           -----------------------------------------------------------------------------------------------------------Exon 2.4  PDB: D:438-542 (gaps) UniProt: 319-428 [INCOMPLETE]                                             Transcript 2 (1)
           Transcript 2 (2) -------------------------------------------------------------------------------------------------------Exon 2.3  PDB: D:332-438 UniProt: 211-319 [INCOMPLETE]                                                       -------------------------------------------------------------------------------------------------------- Transcript 2 (2)
                2y7q D  228 DFTPPTVKILQSSCDGGGHFPPTIQLLCLVSGYTPGTIQITWLEDGQVMDVDLST--------LASTQSELTLSQKHWLSDRTYTCQVT---HTFEDSTKKCA--NPRGVSAYLSRPSPFDLFIRKSPTITCLVVDLAPSKGTVQLTWSRASGKPVNHSTRKEEKQRNGTLTVTSTLPVGTRDWIEGETYQCRVTHPHLPRALMRSTTKTSGPRAAPEVYAFATP-----RDKRTLACLIQNFMPEDISVQWLH---QLPDARHSTTQPRKT---GFFVFSRLEVTRAEWEQK--FICRAVHEAASPSQTVQRAVS  542
                                   237       247      |256       266       276    |    -   |   296       306        |-  |    326  |  | 336       346       356       366       376       386       396       406       416       426       436       446    |    -|      466       476   |   486       496 |   | 506       516  |  | 526       536      
                                                   253A                         281      290                      315 319       329  |                                                                                                                    451   457                    480 484           498 502              519  |                    
                                                                                                                                   332                                                                                                                                                                                           522

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

(no "SCOP Domain" information available for 2Y7Q)

(no "CATH Domain" information available for 2Y7Q)

Asymmetric/Biological Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Ig (577)

Family: C1-set (338)

Homo sapiens (Human) (218)

1a	C1-set-2y7qD01	D:450-536
1b	C1-set-2y7qD02	D:450-536
1c	C1-set-2y7qD03	D:450-536
1d	C1-set-2y7qD04	D:450-536
1e	C1-set-2y7qD05	D:450-536
1f	C1-set-2y7qD06	D:450-536

Family: Ig_2 (52)

Homo sapiens (Human) (39)

2a	Ig_2-2y7qA01	A:87-169
2b	Ig_2-2y7qA02	A:87-169

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (FCERA_HUMAN | P12319)

molecular function
	GO:0019863	IgE binding	Interacting selectively and non-covalently with an immunoglobulin of the IgE isotype.
	GO:0019767	IgE receptor activity	Combining with an immunoglobulin of the IgE isotype via the Fc region, and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
biological process
	GO:0038095	Fc-epsilon receptor signaling pathway	A series of molecular signals initiated by the binding of the Fc portion of immunoglobulin E (IgE) to an Fc-epsilon receptor on the surface of a signal-receiving cell, and ending with regulation of a downstream cellular process, e.g. transcription. The Fc portion of an immunoglobulin is its C-terminal constant region.
	GO:0007257	activation of JUN kinase activity	The initiation of the activity of the inactive enzyme JUN kinase (JNK).
	GO:0000187	activation of MAPK activity	The initiation of the activity of the inactive enzyme MAP kinase (MAPK).
	GO:0007166	cell surface receptor signaling pathway	A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
	GO:0019370	leukotriene biosynthetic process	The chemical reactions and pathways resulting in the formation of leukotriene, a pharmacologically active substance derived from a polyunsaturated fatty acid, such as arachidonic acid.
	GO:0050850	positive regulation of calcium-mediated signaling	Any process that activates or increases the frequency, rate or extent of calcium-mediated signaling.
	GO:0045425	positive regulation of granulocyte macrophage colony-stimulating factor biosynthetic process	Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of granulocyte macrophage colony-stimulating factor.
	GO:0045401	positive regulation of interleukin-3 biosynthetic process	Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of interleukin-3.
	GO:0043306	positive regulation of mast cell degranulation	Any process that activates or increases the frequency, rate or extent of mast cell degranulation.
	GO:0050731	positive regulation of peptidyl-tyrosine phosphorylation	Any process that activates or increases the frequency, rate or extent of the phosphorylation of peptidyl-tyrosine.
	GO:0001812	positive regulation of type I hypersensitivity	Any process that activates or increases the frequency, rate or extent of type I hypersensitivity, a type of inflammatory response.
	GO:0001820	serotonin secretion	The regulated release of serotonin by a cell. Serotonin (5-hydroxytryptamine, or 5-HT) is a monoamine synthesised in serotonergic neurons in the central nervous system, enterochromaffin cells in the gastrointestinal tract and some immune system cells.
	GO:0007165	signal transduction	The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
cellular component
	GO:0009986	cell surface	The external part of the cell wall and/or plasma membrane.
	GO:0009897	external side of plasma membrane	The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005887	integral component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005622	intracellular	The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain B,D (IGHE_HUMAN | P01854)

molecular function
	GO:0003823	antigen binding	Interacting selectively and non-covalently with an antigen, any substance which is capable of inducing a specific immune response and of reacting with the products of that response, the specific antibody or specifically sensitized T-lymphocytes, or both. Binding may counteract the biological activity of the antigen.
	GO:0034987	immunoglobulin receptor binding	Interacting selectively and non-covalently with one or more specific sites on an immunoglobulin receptor molecule.
biological process
	GO:0050853	B cell receptor signaling pathway	A series of molecular signals initiated by the cross-linking of an antigen receptor on a B cell.
	GO:0038095	Fc-epsilon receptor signaling pathway	A series of molecular signals initiated by the binding of the Fc portion of immunoglobulin E (IgE) to an Fc-epsilon receptor on the surface of a signal-receiving cell, and ending with regulation of a downstream cellular process, e.g. transcription. The Fc portion of an immunoglobulin is its C-terminal constant region.
	GO:0006958	complement activation, classical pathway	Any process involved in the activation of any of the steps of the classical pathway of the complement cascade which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes.
	GO:0042742	defense response to bacterium	Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
	GO:0006955	immune response	Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
	GO:0045087	innate immune response	Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
	GO:0006911	phagocytosis, engulfment	The internalization of bacteria, immune complexes and other particulate matter or of an apoptotic cell by phagocytosis, including the membrane and cytoskeletal processes required, which involves one of three mechanisms: zippering of pseudopods around a target via repeated receptor-ligand interactions, sinking of the target directly into plasma membrane of the phagocytosing cell, or induced uptake via an enhanced membrane ruffling of the phagocytosing cell similar to macropinocytosis.
	GO:0006910	phagocytosis, recognition	The initial step in phagocytosis involving adhesion to bacteria, immune complexes and other particulate matter, or an apoptotic cell and based on recognition of factors such as bacterial cell wall components, opsonins like complement and antibody or protein receptors and lipids like phosphatidyl serine, and leading to intracellular signaling in the phagocytosing cell.
	GO:0050871	positive regulation of B cell activation	Any process that activates or increases the frequency, rate or extent of B cell activation.
cellular component
	GO:0072562	blood microparticle	A phospholipid microvesicle that is derived from any of several cell types, such as platelets, blood cells, endothelial cells, or others, and contains membrane receptors as well as other proteins characteristic of the parental cell. Microparticles are heterogeneous in size, and are characterized as microvesicles free of nucleic acids.
	GO:0009897	external side of plasma membrane	The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0042571	immunoglobulin complex, circulating	An immunoglobulin complex that is secreted into extracellular space and found in mucosal areas or other tissues or circulating in the blood or lymph. In its canonical form, a circulating immunoglobulin complex is composed of two identical heavy chains and two identical light chains, held together by disulfide bonds. Some forms of are polymers of the basic structure and contain additional components such as J-chain and the secretory component.

Asymmetric/Biological Unit
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	Ligands, Modified Residues, Ions
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	Cis Peptide Bonds
		Asn A:10 - Pro A:11	[ RasMol ]
		Ser B:532 - Pro B:533	[ RasMol ]

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	2y7q
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1f2q	CRYSTAL STRUCTURE OF THE HUMAN HIGH-AFFINITY IGE RECEPTOR
1f6a	STRUCTURE OF THE HUMAN IGE-FC BOUND TO ITS HIGH AFFINITYRECEPTOR FC(EPSILON)RI(ALPHA)
1fp5	CRYSTAL STRUCTURE ANALYSIS OF THE HUMAN IGE-FC CEPSILON3-CEPSILON4 FRAGMENT.
1g84	THE SOLUTION STRUCTURE OF THE C EPSILON2 DOMAIN FROM IGE
1ige	FC FRAGMENT (IGE'CL) (THEORETICAL MODEL)
1j86	HUMAN HIGH AFFINITY FC RECEPTOR FC(EPSILON)RI(ALPHA), MONOCLINIC CRYSTAL FORM 2
1j87	HUMAN HIGH AFFINITY FC RECEPTOR FC(EPSILON)RI(ALPHA), HEXAGONAL CRYSTAL FORM 1
1j88	HUMAN HIGH AFFINITY FC RECEPTOR FC(EPSILON)RI(ALPHA), TETRAGONAL CRYSTAL FORM 1
1j89	HUMAN HIGH AFFINITY FC RECEPTOR FC(EPSILON)RI(ALPHA), TETRAGONAL CRYSTAL FORM 2
1o0v	THE CRYSTAL STRUCTURE OF IGE FC REVEALS AN ASYMMETRICALLYBENT CONFORMATION
1rpq	HIGH AFFINITY IGE RECEPTOR (ALPHA CHAIN) COMPLEXED WITHTIGHT-BINDING E131 'ZETA' PEPTIDE FROM PHAGE DISPLAY

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 7)

Sites (4, 4)

SS Bonds (10, 10)

Cis Peptide Bonds (2, 2)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (3, 4)

PROSITE Motifs (1, 4)

Exons (6, 9)

Sequences/Alignments

Classification and Annotation

SCOP Domains (0, 0)

CATH Domains (0, 0)

Pfam Domains (2, 8)

Gene Ontology (35, 37)

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Databases

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File